Hi all!
I am in need of a new "focus" pot for my Tektronix 475 scope, serial number B278849. The part Identifier is R1380. The Tek part number is 311-0075-00. Description is: Res., VAR, NONWIR:
5M Ohm 20% It is a small all metal round pot with a 1/4" bushing an an 1/8" shaft. The pot works electrically but is binding/stuck mechanically. It can be rotated, but it is very, very stiff. I'm afraid of breaking the fiberglass extension rod.
Tek, of course doesn't have it, and though it is a simple pot with no special push-pull switching, etc. 5 MegOhm is not that common a value any more so I have not yet found a quality generic replacement. I assume that this pot has linear taper.
Thanks for helping.
Steve Hogan
Can someone out there he
